Document Details

Document Type : Project 
Document Title :
Economic dimensions of the policies of the Saudi labor market Saudization.
الأبعاد الاقتصادية لسياسات سعودة سوق العمل السعودي.
 
Document Language : Arabic 
Abstract : Semi-liquid is a solution of aluminum sulfate, which has the overall structure of AL2 (SO4) 3. XH2O Over the many years he is the production of semi-solid containing 17% alumina for easy packaging and lower shipping costs for long distances but now it has become a semi-liquid is the most prevalent of the low cost of storage and circulation. And aluminum sulfate used in the paper industry and as a Mrobh in the treatment of sewage and industrial liquid waste is not produced locally but are imported to meet local requirements. This was done to study the widespread use of child domestic presence in the Kingdom of Saudi Arabia in the production of semi-liquid. The research was conducted using a local girl contain 29.4% aluminum oxide after grinding and revitalization Elsna and then address the child activated sulfuric acid to extract alumina. For step activation has been studying the impact of both the grain size, temperature and time Alklsna on the degree of extraction, alumina and iron oxide and explained experiments extraction and that was using the quantity theory of sulfuric acid concentration of 40% at the boiling point for one hour using a child crushed between 8 to 200 not system of Tyler sieves, with the change of temperature Alklsna from 450 to 900 degrees Celsius and change the time Alklsna than 15 180 minutes that can be drawn from the 90.9% alumina using a child-size granules 65 not activated by heating at a temperature of 700 C for one hour. She explained the tests conducted on the impact of sulfuric acid concentration on the degree of alumina extraction using quantitative theory of acid and extraction at the boiling point that the concentration of 40% is preferred concentration that achieves a high percentage of alumina extraction and reaction mixture gives the properties of a force fit. For step extraction has made experiments that have been made to set the effect of changing the proportion of acid to the child of% 120-50 of the quantity theory and change the time of extraction of 1 / 4 to 3 hours using a child particle size 65 - not the booster shipping at 700 ° C for one hour, using acid concentration of 40% at the boiling point that can be drawn from the 88.6% alumina with only 88.1% of the quantity theory of acid concentration of 40% and extraction time of two hours. Analysis of the product contains 8.1% alumina (% 23.04 aluminum sulfate), and this percentage is suitable for Specifications of the commercial transport and storage solutions similarities have not been any experiments to separate the iron ions from a solution of semi-product to take advantage of the characteristics of coagulant to the brass-like properties of coagulant of aluminum sulfate. 
Publishing Year : 1409 AH
1989 AD 
Sponsor Name : kau 
Sponsorship Year : 1409 AH
1989 AD 
Added Date : Wednesday, April 30, 2008 

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Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
سيد فتحي الخوليalkhouli, sayyed fathiInvestigatorDoctorate 

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